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O expedite the loading and un- a loading of vessels and to han- dle freight at pier sheds, the hoisting and handling | machinery should be designed along up-to-date lines. The rapid handling of freight reduces demurrage charges and the nonproductive time during which the vessels are in dock. Also it increases the amount of business that can be handled in a given time. . The Edward F. Terry Mfg. Co, New York, manufacturer of cargo handling equipment, has developed electric cargo handling apparatus for many purposes among which is the pier-shed equipment shown in the accompanying illustration. The pier illustrated is equipped with overhead traveling cranes which, during the un- loading of vessels, take care of dis- tributing and storing miscellaneous freight. Many: kinds. of 'freight, as. ..taken from' the holds of the vessels, can be 'stacked with the cargo crane. 'In this connection, the company points out .that the roof trusses should be at least 30 feet from the floor. -The roof of the shed is equipped with hatches and, in loading vessels, cargo can be stacked to advantage near the hatches where it is readily handled by the cargo crane. The cargo crane shown is of the straight-line type and is designed for rapid operation. It travels length- wise of the pier on the shed roof and is equipped with a balanced hoist and transporter. foot band brake on Cargo Handling. Equipment--slotting Machine--Thread Cut- ting Tool--Oscillating Surface Grinder--Electric Rivet Heater boom to facilitate serving the cargo hatches of the vessel. Under ordinary conditions, the crane has a capacity of & to. 5 tons. The hoisting mechanism is designed for balancing the deadweight of the hook block and ball. These can be skipped together with half the aver- age live load during hoisting lowering operations. It is pointed out that this feature reduces the size and weight of the hoist and motor required. One drum, which is fixed to its shaft without friction clutches, is used for hoisting the load and moving the carriage. This feature is said to permit a substantial reduction in the weight of the hoisting mechan- ism. The. control for hoisting and con- veying operations is simple in design and construction. The operator uses a controller brake, shift. lever and lever. The latter operates a tive hoist drum, In starting to hoist, the current is sup- plied through the controller. The change of direction from hoisting to traveling is accomplished by throwing the shift lever which operates with- and | movement, the current is thrown off and the brake applied. To lower the load, the shaft lever is thrown back and the motor reversed. An improved method of housing the boom is employed. This member is extended and withdrawn in 4 straight line without swinging motion, The end of the boom is automatically supported through the medium of stay lines. The hoisting and travers- ing mechanism is in operating condi- tion at all extension points of the boom. ee In many locations, it is advanta- geous to have the freight shed set back a short distance from the face of the dock which leaves a space between the slip and the shed which can be used for a driveway or for the installation of railroad tracks. It is pointed out that the traveling cranes in the shed is designed to reduce handling costs, as they cover the entire floor area and are capable of piling freight to a height of 25 feet, thus utilizing the available floor space to the best ad- Efforts have .been resumed to. raise the tug Bisso, sunk in 150 feet of water It has an extension PIER-SHED EQUIPMENT COMPRISING A HOISTING AND CONV Out shock Yo stop the traverse pear Pointe a la Hache, on the river, | Counterweight . : Sih. h| Hoisting Engine #'\\ \ | \ Pperator's cab ats = -- \ i \\ ---- ol tt Ty \ | a *, witeensGhccnscpianan a am la is ha) A 7 nt wii Ae Boom 'Engine : eaten : EYING CRANE AND 312 TWO OVERHEAD TRAVELING aay 'f Outer Position of Hook reer CRANES FOR DISTRIBUTING FREIGHT